Naming of Fixed-Priority Scheduler (Now is Rate-Monotonic Scheduler)

Sebastian Huber sebastian.huber at
Wed Oct 12 06:06:11 UTC 2016

On 11/10/16 20:46, Gedare Bloom wrote:
>> Furthermore, we can really integrate some well-known priority assignments
>> >and scheduling policy into the kernel to provide automatic priority
>> >assignment but also keep the flexibility of scheduler (like add one more
>> >parameter to enable/disable the flexibility). This kind of design can be
>> >found in LitmusRT as well.
>> >
> Yes, this could be done by introducing a new API for periodic tasks.
> But the priority assignment algorithms take into consideration all of
> the possible tasks in the system, which is not known at runtime in
> current RTEMS APIs. For example, if you use DM scheduling, there must
> be a way to determine how to map deadlines to priorities, which is not
> easily doable unless all the tasks' deadlines are known or the
> previously assigned priorities can be changed due to creation/start of
> a new task whose deadline does not fit in the available remaining
> priorities.

I think we should just implement the Linux API if possible 

Sebastian Huber, embedded brains GmbH

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